SEI SE205 Complete Outdrive (Compatible with Mercury 3-4 Cylinder Outboard Engine)
2.07 / 2-Stroke Carbureted / 20" Shaft
127.259,99 TL
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SEI SE205 Complete Outdrive (Compatible with Mercury 3-4 Cylinder Outboard Engine)
127.259,99 TL
$
2,661.98
USD
€
2,303.83
EUR
VAT Included
Free Shipping
Compatible Product
Estimated Delivery
28 Business Days
Shipping
Free Shipping
Returns
14-Day Easy Returns
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The SEI SE205 Complete Lower Unit is an aftermarket lower unit specifically designed for Mercury/Mariner 3&4 Cylinder 1987+ 70-125 HP 2-Stroke; 75-115 HP 4-Stroke (Serial No. below OT801000), directly replacing the original lower unit, with OE# Not Specified as the reference code. It comes with all internal gears, shafts, bearings, and water pump components factory assembled.
Advantages and Features of the SE205 Complete Lower Unit
- Direct Replacement (Bolt-on): Fully compatible with original lower unit connections, requiring no extra modification or adjustment during installation.
- Complete Solution: Shipped with a pre-assembled water pump kit, gear set, seals, and bearings, reducing labor time.
- Marine-Grade Housing: Cast from high corrosion-resistant marine alloy aluminum with a protective primer and paint coating.
Technical Specifications
| Brand | SEI (Equivalent / Aftermarket) |
| OEM Reference Number | Not Specified |
| Compatible Systems | Mercury/Mariner 3&4 Cylinder 1987+ 70-125 HP 2-Stroke; 75-115 HP 4-Stroke (Serial No. below OT801000) |
| Product Group | Complete Lower Units |
Application Area and Usage
It is preferred as a complete replacement instead of replacing individual parts in cases of lower unit housing cracks, gearbox lock-up, or major mechanical damage.
Maintenance and Installation Recommendations
After the initial installation, the gear oil must be drained and refilled with new oil after a 10-20 hour break-in period, and thereafter the oil level should be checked before each season.
Frequently Asked Questions
Which Mercury engines does the SE205 fit?
It fits 1987 and newer 70-125 HP 3-4 cylinder 2-stroke engines, as well as 75-115 HP 4-stroke engines with serial numbers below OT801000.
Does it replace a 3-jaw lower unit?
No. For a 3-jaw lower unit, the shift shaft in the midsection also needs to be replaced; otherwise, it will not operate compatibly.
How can I confirm compatibility?
You can get pre-order confirmation from the Clever Marin team by providing your engine serial number.
Related Products and Categories
- Anode Products
- Gear Oil Products
- Seal Products
- Impeller Products
- Mercury Products
- Mercury Spare Parts Products
- Gear Products
- Inboard Engine Products
Is This the Right Product for Your Boat?
Provide your engine brand, model, and lower unit serial number to the Clever Marin team, and we will confirm together that the SEI SE205 Complete Lower Unit model will work 100% compatibly with your boat.
Delivery Information
Your orders are dispatched within an average of 28 business days. Free shipping on orders of 5000 TL and above.
Return Policy
You can return the products you purchased unconditionally within 14 days, provided they are unused and in their original packaging. You can contact us through our Customer Service page for return processes.